地源热泵系统运行换热区内外地温场变化特征分析

发布时间：2018-01-13 13:11

本文关键词：地源热泵系统运行换热区内外地温场变化特征分析　出处：《太阳能学报》2017年10期 　论文类型：期刊论文

【摘要】：基于上海某高校综合研究中心地埋管地源热泵工程,对地源热泵系统稳定运行3 a地埋管换热区内外地温场进行实际监测,并对3 a间换热区内外地温场变化特征进行深入分析。分析结果表明:系统稳定运行3 a,换热区内外地温受地埋管换热器取放热影响呈波状变化,并且地温变化相对于环境温度的变化存在一定的滞后性,换热区中心区域约滞后3个月;随着深度的增大地温变化幅度有逐步减小趋势;实验场地源热泵系统持续运行3 a地埋管换热对地温的影响半径半径为6.0~9.0 m;实验场在夏季空调使用高峰采用了地表水地源热泵系统进行调峰,系统持续运行3 a地埋管换热器取放热基本平衡,未造成地层热堆积现象,运行效果较好。
[Abstract]:Based on the ground ground source heat pump (GSHP) project of a comprehensive research center of a university in Shanghai, the ground source heat pump (GSHP) system has been operated steadily for 3 years and the ground temperature field in and out of the underground heat exchange area has been monitored. The variation characteristics of geothermal field in and out of the heat transfer zone are analyzed in depth. The results show that the system runs steadily for 3 years, and the ground temperature inside and outside the heat transfer zone is wave-shaped under the influence of the exothermic effect of the buried tube heat exchanger. Compared with the change of ambient temperature, the variation of ground temperature has some lag, and the central region of heat transfer region is delayed for about 3 months. With the increase of depth, the range of variation of ground temperature has a tendency to decrease gradually. The influence radius of ground source heat pump system on ground temperature for 3 years is 6.0 ~ 9.0 m. The ground water ground-source heat pump system was used to adjust the peak value of air conditioning in summer. The system operated continuously for 3 years and basically balanced the heat release of the ground heat exchanger, which did not cause the formation heat accumulation phenomenon, and the operation effect was better than that of the ground water ground source heat pump system.
【作者单位】：同济大学土木工程学院;上海市地矿工程勘察院;
【分类号】：TU83
【正文快照】： 0引言地埋管换热器作为地埋管地源热泵系统的一个重要组成部分,对于地埋管地源热泵系统可靠运行起着至关重要的作用[1]。地埋管换热器利用地下土壤温度相对稳定的特性,通过与地下土壤进行热交换对建筑物制冷和供暖。因此,地源热泵系统运行期间,地埋管换热区地温场的变化特征对

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